Of the megalithic ruins of the world, one that still stupefies visitors to South America; researchers and laymen alike, is the complex of Tiwanaku, also called Tiahuanaco in Bolivia. The most mysterious part of this archaeological site for many is Puma Punku, a cluster of shattered hard stone building block components that lie undisturbed in the high altitude grasslands near Lake Titicaca. This book looks at solving the riddles of who made Tiwanaku and Puma Punku, when, and how.